Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.0.0-master/package.mo", uses=false) Using package Buildings with version 10.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.0.0-master/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY,fileNamePrefix="Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YY",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY,fileNamePrefix="Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YY",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001795/0.001795, allocations: 100.1 kB / 15.05 MB, free: 1.105 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002921/0.002921, allocations: 177.3 kB / 15.95 MB, free: 216 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 2.581/2.581, allocations: 223.2 MB / 239.9 MB, free: 5.445 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.0.0-master/package.mo): time 4.774/4.774, allocations: 409.2 MB / 0.6838 GB, free: 0.9766 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.0008706/0.000871, allocations: 8 kB / 0.8375 GB, free: 6.531 MB / 0.6856 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.543/1.544, allocations: 146.8 MB / 0.9809 GB, free: 6.301 MB / 0.7325 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY): time 0.0411/1.585, allocations: 17.43 MB / 0.9979 GB, free: 4.812 MB / 0.7481 GB Notification: Performance of NFInst.instExpressions: time 0.0209/1.606, allocations: 6.801 MB / 1.005 GB, free: 14 MB / 0.7637 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003217/1.609, allocations: 47.88 kB / 1.005 GB, free: 13.95 MB / 0.7637 GB Notification: Performance of NFTyping.typeComponents: time 0.002761/1.612, allocations: 453.3 kB / 1.005 GB, free: 13.5 MB / 0.7637 GB Notification: Performance of NFTyping.typeBindings: time 0.006171/1.619, allocations: 0.8567 MB / 1.006 GB, free: 12.64 MB / 0.7637 GB Notification: Performance of NFTyping.typeClassSections: time 0.005248/1.624, allocations: 0.8265 MB / 1.007 GB, free: 11.82 MB / 0.7637 GB Notification: Performance of NFFlatten.flatten: time 0.008014/1.632, allocations: 2.527 MB / 1.009 GB, free: 9.285 MB / 0.7637 GB Notification: Performance of NFFlatten.resolveConnections: time 0.02367/1.656, allocations: 8.627 MB / 1.018 GB, free: 0.5781 MB / 0.7637 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005035/1.661, allocations: 1.48 MB / 1.019 GB, free: 15.09 MB / 0.7794 GB Notification: Performance of NFSimplifyModel.simplify: time 0.006063/1.667, allocations: 1.823 MB / 1.021 GB, free: 13.27 MB / 0.7794 GB Notification: Performance of NFPackage.collectConstants: time 0.001691/1.669, allocations: 256 kB / 1.021 GB, free: 13.02 MB / 0.7794 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004205/1.673, allocations: 0.6829 MB / 1.022 GB, free: 12.33 MB / 0.7794 GB Notification: Performance of NFScalarize.scalarize: time 0.005104/1.678, allocations: 1.879 MB / 1.024 GB, free: 10.45 MB / 0.7794 GB Notification: Performance of NFVerifyModel.verify: time 0.00285/1.681, allocations: 0.7576 MB / 1.024 GB, free: 9.684 MB / 0.7794 GB Notification: Performance of NFConvertDAE.convert: time 0.01561/1.697, allocations: 7.113 MB / 1.031 GB, free: 2.555 MB / 0.7794 GB Notification: Performance of FrontEnd - DAE generated: time 8.897e-06/1.697, allocations: 3.938 kB / 1.031 GB, free: 2.551 MB / 0.7794 GB Notification: Performance of FrontEnd: time 5.721e-06/1.697, allocations: 0 / 1.031 GB, free: 2.551 MB / 0.7794 GB Notification: Performance of Transformations before backend: time 0.0004001/1.697, allocations: 4 kB / 1.031 GB, free: 2.547 MB / 0.7794 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1094 * Number of variables: 1094 Notification: Performance of Generate backend data structure: time 0.01672/1.714, allocations: 3.329 MB / 1.035 GB, free: 15.15 MB / 0.795 GB Notification: Performance of prepare preOptimizeDAE: time 8.431e-05/1.714, allocations: 8.031 kB / 1.035 GB, free: 15.14 MB / 0.795 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.003785/1.718, allocations: 0.6034 MB / 1.035 GB, free: 14.54 MB / 0.795 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02565/1.743, allocations: 2.496 MB / 1.038 GB, free: 12.03 MB / 0.795 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01055/1.754, allocations: 2.268 MB / 1.04 GB, free: 9.719 MB / 0.795 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0008435/1.755, allocations: 299.9 kB / 1.04 GB, free: 9.426 MB / 0.795 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002766/1.758, allocations: 384 kB / 1.04 GB, free: 9.051 MB / 0.795 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03467/1.792, allocations: 7.601 MB / 1.048 GB, free: 1.332 MB / 0.795 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001915/1.793, allocations: 7.938 kB / 1.048 GB, free: 1.324 MB / 0.795 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001504/1.794, allocations: 164 kB / 1.048 GB, free: 1.164 MB / 0.795 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.001059/1.795, allocations: 346.8 kB / 1.048 GB, free: 0.8242 MB / 0.795 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03358/1.829, allocations: 7.253 MB / 1.055 GB, free: 9.559 MB / 0.8106 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.08841/1.917, allocations: 29.28 MB / 1.084 GB, free: 9.758 MB / 0.8419 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0143/1.932, allocations: 3.615 MB / 1.088 GB, free: 5.984 MB / 0.8419 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005891/1.933, allocations: 130.4 kB / 1.088 GB, free: 5.84 MB / 0.8419 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 9.336e-05/1.933, allocations: 55.81 kB / 1.088 GB, free: 5.777 MB / 0.8419 GB Notification: Performance of pre-optimization done (n=176): time 9.958e-06/1.933, allocations: 0 / 1.088 GB, free: 5.777 MB / 0.8419 GB Notification: Performance of matching and sorting (n=221): time 0.1476/2.08, allocations: 24.61 MB / 1.112 GB, free: 13.07 MB / 0.8731 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0003099/2.081, allocations: 231.6 kB / 1.112 GB, free: 12.79 MB / 0.8731 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005829/2.087, allocations: 1.613 MB / 1.114 GB, free: 11.17 MB / 0.8731 GB Notification: Performance of collectPreVariables (initialization): time 0.001186/2.088, allocations: 61.7 kB / 1.114 GB, free: 11.1 MB / 0.8731 GB Notification: Performance of collectInitialEqns (initialization): time 0.002918/2.091, allocations: 1.752 MB / 1.115 GB, free: 9.324 MB / 0.8731 GB Notification: Performance of collectInitialBindings (initialization): time 0.002384/2.093, allocations: 0.7549 MB / 1.116 GB, free: 8.559 MB / 0.8731 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009516/2.094, allocations: 64 kB / 1.116 GB, free: 8.496 MB / 0.8731 GB Notification: Performance of setup shared object (initialization): time 0.0006072/2.095, allocations: 448.4 kB / 1.117 GB, free: 8.051 MB / 0.8731 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.01107/2.106, allocations: 2.402 MB / 1.119 GB, free: 5.645 MB / 0.8731 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.01475/2.121, allocations: 3.503 MB / 1.122 GB, free: 1.641 MB / 0.8731 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01408/2.135, allocations: 2.882 MB / 1.125 GB, free: 14.75 MB / 0.8887 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.803e-05/2.135, allocations: 12 kB / 1.125 GB, free: 14.74 MB / 0.8887 GB Notification: Performance of matching and sorting (n=400) (initialization): time 0.05364/2.189, allocations: 9.854 MB / 1.135 GB, free: 4.867 MB / 0.8887 GB Notification: Performance of prepare postOptimizeDAE: time 0.01319/2.202, allocations: 13.85 MB / 1.148 GB, free: 5.938 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002629/2.203, allocations: 32 kB / 1.148 GB, free: 5.906 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.04252/2.245, allocations: 5.42 MB / 1.154 GB, free: 484 kB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.008793/2.254, allocations: 1.03 MB / 1.155 GB, free: 15.44 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.07061/2.325, allocations: 19.26 MB / 1.173 GB, free: 11.93 MB / 0.9356 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.008957/2.334, allocations: 0.5806 MB / 1.174 GB, free: 11.34 MB / 0.9356 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001395/2.335, allocations: 163.9 kB / 1.174 GB, free: 11.18 MB / 0.9356 GB Notification: Performance of prepare postOptimizeDAE: time 2.608e-05/2.335, allocations: 4 kB / 1.174 GB, free: 11.18 MB / 0.9356 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.04017/2.375, allocations: 8.165 MB / 1.182 GB, free: 3.004 MB / 0.9356 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002796/2.376, allocations: 36 kB / 1.182 GB, free: 2.969 MB / 0.9356 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.027/2.403, allocations: 3.416 MB / 1.185 GB, free: 15.55 MB / 0.9512 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01048/2.413, allocations: 1.151 MB / 1.187 GB, free: 14.39 MB / 0.9512 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04111/2.455, allocations: 10.6 MB / 1.197 GB, free: 3.652 MB / 0.9512 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.008838/2.464, allocations: 0.5419 MB / 1.197 GB, free: 3.109 MB / 0.9512 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001452/2.465, allocations: 160 kB / 1.198 GB, free: 2.953 MB / 0.9512 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 159 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (330): * Single equations (assignments): 328 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(6,100.0%) 30} * Non-linear torn systems: 1 {6 30} Notification: Performance of prepare postOptimizeDAE: time 0.00797/2.473, allocations: 1.698 MB / 1.199 GB, free: 1.242 MB / 0.9512 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001188/2.474, allocations: 197.7 kB / 1.199 GB, free: 1.047 MB / 0.9512 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.04455/2.519, allocations: 8.668 MB / 1.208 GB, free: 8.344 MB / 0.9669 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.651e-05/2.519, allocations: 24 kB / 1.208 GB, free: 8.32 MB / 0.9669 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.39e-05/2.519, allocations: 8 kB / 1.208 GB, free: 8.312 MB / 0.9669 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.398e-05/2.519, allocations: 19.95 kB / 1.208 GB, free: 8.293 MB / 0.9669 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.06421/2.583, allocations: 13.97 MB / 1.222 GB, free: 10.14 MB / 0.9825 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.397e-05/2.584, allocations: 12.09 kB / 1.222 GB, free: 10.13 MB / 0.9825 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.006226/2.59, allocations: 0.7137 MB / 1.222 GB, free: 9.414 MB / 0.9825 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.03664/2.626, allocations: 5.096 MB / 1.227 GB, free: 4.305 MB / 0.9825 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0008442/2.627, allocations: 71.95 kB / 1.227 GB, free: 4.234 MB / 0.9825 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.05982/2.687, allocations: 18.21 MB / 1.245 GB, free: 1.738 MB / 0.9981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.259e-05/2.687, allocations: 16.19 kB / 1.245 GB, free: 1.723 MB / 0.9981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 1.335/4.023, allocations: 9.205 MB / 1.254 GB, free: 240.7 MB / 0.9981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.004001/4.027, allocations: 0.6403 MB / 1.255 GB, free: 240.6 MB / 0.9981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001305/4.028, allocations: 56.25 kB / 1.255 GB, free: 240.6 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.007232/4.036, allocations: 0.4889 MB / 1.255 GB, free: 240.6 MB / 0.9981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001489/4.037, allocations: 189.3 kB / 1.256 GB, free: 240.5 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005537/4.038, allocations: 82.95 kB / 1.256 GB, free: 240.5 MB / 0.9981 GB Notification: Performance of sorting global known variables: time 0.004251/4.042, allocations: 1.079 MB / 1.257 GB, free: 240.4 MB / 0.9981 GB Notification: Performance of sort global known variables: time 3.51e-07/4.042, allocations: 0.5312 kB / 1.257 GB, free: 240.4 MB / 0.9981 GB Notification: Performance of remove unused functions: time 0.0149/4.057, allocations: 1.742 MB / 1.258 GB, free: 240.4 MB / 0.9981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 34 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (154): * Single equations (assignments): 152 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(6,100.0%) 30} * Non-linear torn systems: 1 {6 30} Notification: Performance of Backend phase and start with SimCode phase: time 0.04101/4.098, allocations: 12.03 MB / 1.27 GB, free: 235.1 MB / 0.9981 GB Notification: Performance of simCode: created initialization part: time 0.04368/4.142, allocations: 10.7 MB / 1.281 GB, free: 232.1 MB / 0.9981 GB Notification: Performance of simCode: created event and clocks part: time 2.469e-05/4.142, allocations: 0 / 1.281 GB, free: 232.1 MB / 0.9981 GB Notification: Performance of simCode: created simulation system equations: time 0.01656/4.158, allocations: 3.775 MB / 1.284 GB, free: 230.6 MB / 0.9981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003596/4.162, allocations: 226.2 kB / 1.284 GB, free: 230.3 MB / 0.9981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1119/4.274, allocations: 51.3 MB / 1.335 GB, free: 177.9 MB / 0.9981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.006258/4.28, allocations: 2.976 MB / 1.337 GB, free: 174.9 MB / 0.9981 GB Notification: Performance of simCode: alias equations: time 0.009351/4.29, allocations: 1.683 MB / 1.339 GB, free: 173.2 MB / 0.9981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.003481/4.293, allocations: 1.311 MB / 1.34 GB, free: 171.9 MB / 0.9981 GB Notification: Performance of SimCode: time 3.035e-06/4.293, allocations: 0 / 1.34 GB, free: 171.9 MB / 0.9981 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.3669/4.66, allocations: 85.39 MB / 1.424 GB, free: 86.99 MB / 0.9981 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0004602/4.661, allocations: 284.6 kB / 1.424 GB, free: 86.63 MB / 0.9981 GB Notification: Performance of buildModelFMU: Generate platform static: time 6.768/11.43, allocations: 6.625 kB / 1.424 GB, free: 86.62 MB / 0.9981 GB (rm -f Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY.pipe ; mkfifo Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY.pipe ; head -c 1048576 < Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY.pipe >> ../files/Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator -r=Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY_res.mat --tempDir=temp_Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YY_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YY.fmu > Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY.pipe 2>&1) Environment - environmentSimulation: TODO: How the !@#!# did the simulation report success but simulation result Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YY_res.mat does not exist to compare? outputFormat=mat